Income Taxes	3 Months Ended
Mar. 31, 2013
Income Tax Expense (Benefit) [Abstract]
Income Taxes	Income Taxes As of March 31, 2013, there were no significant changes to the Company's unrecognized tax benefits as reported in its Form 10-K for the year ended December 31, 2012. The Company's income tax expense and resulting effective tax rate are based upon the respective estimated annual effective tax rates applicable for the respective periods adjusted for the effects of items required to be treated as discrete to the period, including changes in tax laws, changes in estimated exposures for uncertain tax positions, and other items. The Company's effective tax rate for the three months ended March 31, 2013 included $13.1 million of net tax benefits that are discrete to the first quarter of 2013, including $8.3 million of net tax benefits associated with the recognition of incremental deferred taxes and $4.8 million associated with the resolution of certain tax contingencies. Included in the $8.3 million of net tax benefits is the reversal of a valuation allowance on a deferred tax asset of $14.6 million. The Company’s effective tax rate for the three months ended March 31, 2012 was favorably impacted by a change in the geographical mix in earnings.

Income Taxes

3 Months Ended

Mar. 31, 2013

Income Tax Expense (Benefit) [Abstract]

As of March 31, 2013, there were no significant changes to the Company's unrecognized tax benefits as reported in its Form 10-K for the year ended December 31, 2012.

The Company's income tax expense and resulting effective tax rate are based upon the respective estimated annual effective tax rates applicable for the respective periods adjusted for the effects of items required to be treated as discrete to the period, including changes in tax laws, changes in estimated exposures for uncertain tax positions, and other items. The Company's effective tax rate for the three months ended March 31, 2013 included $13.1 million of net tax benefits that are discrete to the first quarter of 2013, including $8.3 million of net tax benefits associated with the recognition of incremental deferred taxes and $4.8 million associated with the resolution of certain tax contingencies. Included in the $8.3 million of net tax benefits is the reversal of a valuation allowance on a deferred tax asset of $14.6 million. The Company’s effective tax rate for the three months ended March 31, 2012 was favorably impacted by a change in the geographical mix in earnings.